Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 400 mg/l 200 mg/l 300 mg/l 100 mg/l 400 mg/l 200 mg/l 300 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Facultative bacteria survive in Neither A nor B The absence of oxygen The presence of oxygen Both cases A and B Neither A nor B The absence of oxygen The presence of oxygen Both cases A and B ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For detecting the nitrites in the sewage, the matching colour may be developed by adding Phenol-di -sulphuric acid potassium hydroxide Sulphuric acid and napthamine None of these Potassium permanganate Phenol-di -sulphuric acid potassium hydroxide Sulphuric acid and napthamine None of these Potassium permanganate ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed 10 ppm 5 ppm 4 ppm 3 ppm 10 ppm 5 ppm 4 ppm 3 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Maximum permissible velocity 1.5 m/sec, is adopted in drains Both A. and B. Lined with stones With beds of rocks and gravels Neither A. nor B. Both A. and B. Lined with stones With beds of rocks and gravels Neither A. nor B. ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by Lloyd Davis Frubling All listed here Kinchling Lloyd Davis Frubling All listed here Kinchling ANSWER DOWNLOAD EXAMIANS APP
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